refactor(magnification): Renaming IWindowMagnificationConnection as IMagnificationConnection

Considering the connection is handling functions more than window
magnification operations, we would like to rename it as
IMagnificationconnection.

Bug: 310109308
Test: manually. Renaming the class and methods
      atest IMagnificationConnectionTest
      atest android.view.accessibility.AccessibilityManagerTest
      atest MagnificationTest
      atest CommandQueueTest
      atest com.android.server.accessibility.magnification.FullScreenMagnificationControllerTest
      atest MagnificationConnectionWrapperTest
      atest MagnificationControllerTest
      atest MagnificationConnectionManagerTest
      atest WindowMagnificationGestureHandlerTest
Flag: NA
Change-Id: I6a19621dcf83e3c37b99204631e9bc022e894b5a
diff --git a/boot/preloaded-classes b/boot/preloaded-classes
index 72322ef5..548fa2f 100644
--- a/boot/preloaded-classes
+++ b/boot/preloaded-classes
@@ -8924,9 +8924,9 @@
 android.view.accessibility.IAccessibilityManagerClient$Stub$Proxy
 android.view.accessibility.IAccessibilityManagerClient$Stub
 android.view.accessibility.IAccessibilityManagerClient
-android.view.accessibility.IWindowMagnificationConnection$Stub$Proxy
-android.view.accessibility.IWindowMagnificationConnection$Stub
-android.view.accessibility.IWindowMagnificationConnection
+android.view.accessibility.IMagnificationConnection$Stub$Proxy
+android.view.accessibility.IMagnificationConnection$Stub
+android.view.accessibility.IMagnificationConnection
 android.view.accessibility.WeakSparseArray$WeakReferenceWithId
 android.view.accessibility.WeakSparseArray
 android.view.animation.AccelerateDecelerateInterpolator